/* 株Qシート 自動投稿：説明のページ（静的。外部のスクリプト・トラッキングなし） */
:root { --navy: #0B1630; --navy2: #16294F; --text: #1f2933; --muted: #5b6676; --red: #FF3B3B; --line: #e3e8ef; }
* { box-sizing: border-box; }
body { margin: 0; font-family: "Noto Sans JP", "Hiragino Sans", "Yu Gothic", "Meiryo", sans-serif; color: var(--text); line-height: 1.8; background: #f7f9fc; }
header { background: linear-gradient(135deg, var(--navy), var(--navy2)); color: #fff; padding: 28px 20px; }
header .inner, main, footer .inner { max-width: 820px; margin: 0 auto; }
header img { height: 56px; display: block; }
header p { margin: 10px 0 0; color: #c9d6f0; }
nav { margin-top: 16px; display: flex; flex-wrap: wrap; gap: 10px; }
nav a { color: #fff; text-decoration: none; border: 1px solid rgba(255,255,255,.35); border-radius: 999px; padding: 6px 16px; font-weight: 700; }
nav a:hover, nav a[aria-current="page"] { background: rgba(255,255,255,.14); }
main { padding: 28px 20px 40px; }
h1 { font-size: 1.6rem; margin: 0 0 8px; }
h2 { font-size: 1.15rem; margin: 32px 0 8px; padding-left: 10px; border-left: 4px solid var(--red); }
p, li { font-size: 1rem; }
.card { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 18px 22px; margin: 18px 0; }
.links { display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0; }
.links a { display: inline-block; background: var(--navy); color: #fff; text-decoration: none; padding: 10px 20px; border-radius: 10px; font-weight: 700; }
.muted { color: var(--muted); font-size: .92rem; }
code { background: #eef2f7; padding: 1px 6px; border-radius: 4px; }
footer { border-top: 1px solid var(--line); padding: 18px 20px 30px; color: var(--muted); font-size: .9rem; }
footer a { color: var(--muted); }